Fix differences print out on check

fs/accounting.go

@@ -106,10 +106,17 @@ func (s *StatsInfo) Errors(errors int64) {
 	s.errors += errors
 }
 
+// GetErrors reads the number of errors
+func (s *StatsInfo) GetErrors() int64 {
+	s.lock.RLock()
+	defer s.lock.RUnlock()
+	return s.errors
+}
+
 // Errored returns whether there have been any errors
 func (s *StatsInfo) Errored() bool {
-	s.lock.Lock()
-	defer s.lock.Unlock()
+	s.lock.RLock()
+	defer s.lock.RUnlock()
 	return s.errors != 0
 }
 

rclone.go

@@ -300,7 +300,7 @@ func Check(fdst, fsrc fs.Fs) {
 
 	log.Printf("Waiting for checks to finish")
 	checkerWg.Wait()
-	log.Printf("%d differences found", fs.Stats.Errors)
+	log.Printf("%d differences found", fs.Stats.GetErrors())
 }
 
 // List the Fs to stdout